The Heavy Duty Silver Tarps from TarpUSA™ are ideal for storm tarps, hurricane tarps, truck covers, roof covers, canopy tops, shelters, backyard ice skating rink liners, hay stack covers, boat covers and landfill coverings. Perfect where a strong durable product is needed, these heavy-duty poly tarps are 11-12 mil thick laminated polyethylene and have a weight 6 ounce per square yard. They are made from 1200 Denier with a 14x14 weave count. Our heavy duty silver tarps are waterproof, mildew resistant, tear resistant and acid resistant. The Silver Tarps are laminated on both sides to completely block sunlight. Both are UV treated for extended protection. These heavy duty tarps have folded edges that are double-stitched with cord reinforcement. They come with rustproof aluminum grommets installed about every 18 inches along each side and has reinforced corners for your convenience. With their strength, these are effective for use as a storm tarp or hurricane tarp. Please note that the finished measured size is roughly 2% smaller than the quoted sizes below. For large quantities, custom-size heavy duty tarps or bulk-shipping rates, please call us at (800) 352-6609.